When it's not storming in the ITCZ, the weather can be completely calm, with little to no wind.

CNN: Airplane went down in volatile equatorial zone

While he was in the rain, while it was raining so hard and the wind was blowing, he was praying that God will calm the water, calm the wind, so that he will be able to make it somewhere with his kids.

NPR: Succession Of Storms Cripples Haiti

They will need calm seas to launch and recover the sub - but while in the harbour, a strong wind has blown in, white caps topping the waves.

BBC: James Cameron gets ready to dive to the Mariana Trench